Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0NCH callsign genealogy
Currently held by Tjarks, David M
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by K0NCH's current licensee, walking backwards.
- Tjarks, David MCOgranted 2017-11-20cancelled 2017-12-15
Successor callsigns
Callsigns held now by people who previously held K0NCH.
No current licensee on record previously held this callsign.